Malicious PDF — malware analysis report

Static analysis result for SHA-256 03022a4b3c30ba85…

MALICIOUS

PDF

38.0 KB Created: 2020-08-07 03:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4bc3275726415692ac5b163276d952 SHA-1: 790f4a06f97c7ed023cd6f028f6addaf28189077 SHA-256: 03022a4b3c30ba857d8f17fd691fb91dd51a13f61d44b6539aa32578cb922fdf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure. The document body text and embedded links suggest a lure related to official documentation, likely to trick users into clicking through to a malicious site. The presence of multiple external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=attestation+d+%25C3%25A9lection+de+domicile+pdf
    • http://buzudefu.littlesilverems.com/uploads/1/3/1/4/131452977/ec1d8c3ad930f95.pdf
    • http://nexidulu.perrymusicals.com/uploads/1/3/2/6/132682076/52f27.pdf
    • http://files.kateschroederlpc.com/uploads/1/3/2/6/132695805/susitineniwufawedavi.pdf
    • http://files.allezmag.co/uploads/1/3/0/7/130775126/kedibonigozet_lolubabemore_gamukemitotaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/wozidowapamuzefupufuvab.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/tofuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/tunodunakiduduk.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/bulletproof_shopping_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/1582036410.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/madumimugixoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/viwefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/cube_world_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/95936488802.pdf
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/cbse_sample_paper_2020_class_12_physics.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/xegixikefugupaguwaviz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005423.bin
8127bf2fa3a1af615350697688a115a74d70e050aebf4f21002b4fdc07a2a54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5423 5336 bytes
font_01_sfnt_off000065fc.bin
23d80deb061265c6ca6039f99e83f7e8169068b5b68fdd6e4d9f9d27e13fbf6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x65FC 10816 bytes